Relaying in Wireless Sensor Networks with Interference Mitigation

Author

Vakil, Sam ; Liang, Ben

Author_Institution

Dept. of Electr. & Comput. Eng., Toronto Univ., Ont.

fYear

0

fDate

0-0 0

Firstpage

80

Lastpage

83

Abstract

We study the use of wireless relay channel in a one-hop sensor network with random packet arrival. Exploiting regular sensor nodes to serve in a wireless relay channel can increase the overall network capacity. However, due to asynchronous source transmission, the relays interfere with each other´s transmission and reception. The fundamental trade-off between these two issues leads us to an optimization problem in which we find the optimum relay zone radius to maximize the overall sum rate of the network. We also propose a MAC protocol to choose the optimum number of sources allowed to transmit under this setting. The overall system capacity is proven to increase significantly under the proposed scheme, compared with cases where relay nodes are not exploited or where the relay zone radius is suboptimal

Keywords

access protocols; channel capacity; interference suppression; wireless channels; wireless sensor networks; MAC protocol; asynchronous source transmission; interference mitigation; medium access control; network capacity; relay channel; wireless sensor network; Capacitive sensors; Intelligent networks; Interference; Mechanical sensors; Media Access Protocol; Mobile communication; Quality of service; Relays; Sensor systems; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2006 23rd Biennial Symposium on

Conference_Location

Kigston, Ont.

Print_ISBN

0-7803-9528-X

Type

conf

DOI

10.1109/BSC.2006.1644575

Filename

1644575